The sum of 3 plus 4 is 7.
7
The total sum of 4+5.23+3 = 12.23
9
1+0+3 is the digit sum of 103
25
The sum of 3x plus 2 and -4 plus 3 is 3x+1 if the equation is (3x+2)+(-4+3). If they are two separate questions, 3x+2 remains as itself while -4+3=-1.
3 plus 4 equals 7. To check your answer, use a calculator, or your fingers.
The answer is 1830.
26
4
4